A three-channel heat storage heat exchange device

Abstract

The utility model discloses a three-channel heat storage heat exchange device. The utility model relates to the technical field of heat exchangers, and in particular to a three-channel heat storage heat exchange device, comprising a main smoke inlet channel and a main smoke outlet channel, wherein three parallel heat exchange mechanisms are arranged between the main smoke inlet channel and the main smoke outlet channel and are used for heat transfer, and the heat exchange mechanism comprises: a main body component, comprising a shell arranged between the main smoke inlet channel and the main smoke outlet channel, a warehouse opening opened at the front end of the shell, a partition fixed at both ends inside the shell, and a plurality of circular holes opened inside the partition; the tube bundle can be replaced without removing the heat exchange mechanism as a whole, and when the heat exchange mechanism needs maintenance, the first three-way reversing valve and the second three-way reversing valve can be closed, and the three heat exchange mechanisms are connected in parallel, so that the maintenance of one heat exchange mechanism will not affect the normal operation of the other two heat exchange mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a three-channel heat storage type heat exchange device. Background Art

[0002] Regenerative combustion technology is a technology developed in the 1980s for efficiently recovering waste heat from high-temperature flue gas. This technology has great advantages in improving the thermal efficiency of flame furnaces, reducing pollutant emissions, and expanding the use of low-energy fuels. The high efficiency, energy saving and environmental protection of regenerative combustion technology have been widely recognized in the industrial furnace industry, and it has set off a combustion technology revolution in the field of industrial furnaces, playing a huge role in promoting global energy conservation, comprehensive utilization and environmental protection.

[0003] After checking the publication number: CN110848724A, a three-channel heat storage heat exchange device is disclosed. This technology discloses "a three-channel heat storage heat exchange device, which heats the combustion-supporting air in turn through the three-channel heat storage heat exchange device to provide a stable and continuous combustion-supporting air volume. Compared with the conventional heat storage combustion combustion-supporting air heating device, it avoids the problem of frequent reversal of a single reversing valve, which is easy to be damaged and has a short service life." The technical effects include "overcoming the phenomenon of fluctuations in the combustion-supporting air temperature, furnace temperature and pressure; solving the problem of dust blockage and frequent replacement of the heat storage body. The device has the advantages of simple layout, easy maintenance, and PLC control";

[0004] In the above scheme, the tube bundles in the heat storage tank, as key components of the heat exchanger, play a core role in the heat transfer process. However, once these tube bundles need to be cleaned or replaced, the operation process becomes relatively complicated and costly. At this time, not only is it necessary to shut down the entire system, disconnect each connection point one by one, remove the mounting bolts and supporting structures, but the disassembly and reinstallation of the entire heat exchanger will involve the maintenance cost of the equipment itself, and will also cause production losses during system downtime, additional labor costs, transportation costs, and possible further repairs or inspection costs. Such a process is not only time-consuming, but may also have a significant impact on production efficiency and economic benefits. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a three-channel heat storage heat exchange device, which has the characteristics of being able to replace the tube bundle without removing the heat exchange mechanism as a whole, and when the heat exchange mechanism needs maintenance, the first three-way reversing valve and the second three-way reversing valve can be closed, and the three heat exchange mechanisms are connected in parallel, so that maintenance of one heat exchange mechanism will not affect the normal operation of the other two heat exchange mechanisms.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a three-channel heat storage heat exchange device, including a main smoke inlet channel and a main smoke outlet channel, three parallel heat exchange mechanisms are arranged between the main smoke inlet channel and the main smoke outlet channel and are used for heat transfer, and the heat exchange mechanisms include:

[0007] The main body assembly includes a shell disposed between the main smoke inlet channel and the main smoke outlet channel, a hatch opened at the front end of the shell, a partition fixed at both ends inside the shell, and a plurality of circular holes opened inside the partition;

[0008] The frame assembly includes a shaft rod rotatably mounted between two end partitions, a mounting frame with fixed outer walls at both ends of the shaft rod, and a plurality of mounting grooves distributed circumferentially on the mounting frame;

[0009] The actuator assembly includes a fixing frame inserted into the installation groove and a pipe bundle installed through the fixing frames at both ends.

[0010] Preferably, the frame assembly further includes a first mounting hole opened on the outer wall of the mounting frame, and the execution assembly further includes a second mounting hole opened on the outer wall of the fixing frame and matched with the first mounting hole.

[0011] Preferably, the actuator assembly further comprises gaskets fixed at both ends of the tube bundle, and the gaskets at both ends are respectively matched with the circular holes on the baffles at both ends.

[0012] Preferably, the main body component further includes mounting ears fixed at four corners inside the bay opening, and a shell cover is installed in the bay opening through the mounting ears.

[0013] Preferably, a sealing ring is fixed to the outer edge of the inner surface of the shell cover, and the sealing ring cooperates with the inner wall of the warehouse opening.

[0014] Preferably, a first three-way reversing valve and a second three-way reversing valve are respectively installed at both ends of the shell, and the first three-way reversing valve and the second three-way reversing valve are respectively connected to the main smoke inlet channel and the main smoke outlet channel.

[0015] Beneficial Effects

[0016] The utility model provides a three-channel heat storage heat exchange device. Compared with the prior art, it has the following beneficial effects:

[0017] (1) By removing the shell cover and rotating the frame assembly so that the actuator to be replaced is located between the hatches in the front, the bolts fixing the fixing frame and the mounting frame are removed, so that the actuator can be removed from the frame assembly, and the actuator is taken out of the shell through the hatch, and the tube bundle is pulled out and separated from the fixing frame, and the replaced tube bundle is installed between the fixing frames, and finally the replaced actuator is installed back into the frame assembly and fixed; so that the tube bundle can be replaced without removing the heat exchange mechanism as a whole.

[0018] (2) When the heat exchange mechanism needs maintenance, the first three-way reversing valve and the second three-way reversing valve can be closed, and the three heat exchange mechanisms are connected in parallel, so that maintenance of one heat exchange mechanism will not affect the normal operation of the other two heat exchange mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the disassembled structure of the heat exchange mechanism in the utility model;

[0021] Figure 3 It is a schematic diagram of the structure inside the heat exchange mechanism of the utility model;

[0022] Figure 4 It is a schematic diagram of the split structure of the frame assembly and the execution assembly in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the frame assembly in the utility model.

[0024] In the figure: 1. main flue gas inlet channel; 2. first three-way reversing valve; 3. heat exchange mechanism; 31. main body assembly; 311. shell; 312. hatch; 313. mounting ear; 314. shell cover; 315. partition; 316. round hole; 32. frame assembly; 321. shaft rod; 322. mounting frame; 323. mounting groove; 324. first mounting hole; 33. actuator assembly; 331. fixing frame; 332. tube bundle; 333. second mounting hole; 334. gasket; 4. second three-way reversing valve; 5. main flue gas outlet channel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a three-channel heat storage heat exchange device technical solution: a three-channel heat storage heat exchange device, including a main flue gas inlet channel 1 and a main flue gas outlet channel 5, three parallel heat exchange mechanisms 3 are arranged between the main flue gas inlet channel 1 and the main flue gas outlet channel 5 and are used for heat transfer, and the heat exchange mechanism 3 includes:

[0027] The main body component 31 includes a shell 311 disposed between the main smoke inlet channel 1 and the main smoke outlet channel 5, a hatch 312 opened at the front end of the shell 311, a partition 315 fixed at both ends of the shell 311, and a plurality of circular holes 316 opened in the partition 315;

[0028] The frame assembly 32 includes a shaft 321 rotatably mounted between the two end partitions 315, a mounting frame 322 with fixed outer walls at both ends of the shaft 321, and a plurality of mounting grooves 323 distributed circumferentially on the mounting frame 322;

[0029] The actuator assembly 33 includes a fixing frame 331 inserted into the mounting groove 323 and a tube bundle 332 passing through the fixing frames 331 at both ends.

[0030] In this embodiment, when the tube bundle 332 needs to be replaced, the shell cover 314 is removed, and then the frame assembly 32 is rotated so that the actuator assembly 33 to be replaced is located between the hatch 312 in the front, and then the bolts fixing between the fixing frame 331 and the mounting frame 322 are removed, so that the actuator assembly 33 can be removed from the frame assembly 32, and the actuator assembly 33 is taken out of the shell 311 through the hatch 312, and then the tube bundle 332 is pulled out and separated from the fixing frame 331, and the replaced tube bundle 332 is installed between the fixing frames 331, and finally the replaced actuator assembly 33 is installed back into the frame assembly 32 and fixed, and the frame assembly 32 is rotated to drive the tube bundle 332 in the actuator assembly 33 to align with the circular hole 316.

[0031] Specifically, the frame assembly 32 further includes a first mounting hole 324 opened on the outer wall of the mounting frame 322 , and the actuator assembly 33 further includes a second mounting hole 333 opened on the outer wall of the fixing frame 331 and matched with the first mounting hole 324 .

[0032] In this embodiment, the second mounting hole 333 can be fixed in the mounting groove 323 on the mounting frame 322 by bolts.

[0033] Specifically, the actuator assembly 33 further includes gaskets 334 fixed at both ends of the tube bundle 332 , and the gaskets 334 at both ends are matched with the circular holes 316 on the partitions 315 at both ends respectively.

[0034] In this embodiment, the gap between the tube bundle 332 and the partition plate 315 is filled with a gasket 334 to ensure sealing.

[0035] Specifically, the main body component 31 further includes mounting ears 313 fixed at four corners inside the bay opening 312 , and a shell cover 314 is installed in the bay opening 312 through the mounting ears 313 .

[0036] In this embodiment, the shell cover 314 can be disassembled and assembled with the shell body 311 , so that the actuator 33 can be removed from or assembled into the shell body 311 through the hatch 312 .

[0037] Specifically, a sealing ring is fixed on the outer edge of the inner surface of the shell cover 314 , and the sealing ring matches the inner wall of the chamber opening 312 .

[0038] In this embodiment, a sealing ring can be used to improve the sealing between the shell cover 314 and the shell body 311 when they are closed to prevent gas leakage.

[0039] Specifically, a first three-way reversing valve 2 and a second three-way reversing valve 4 are respectively installed at both ends of the housing 311, and the first three-way reversing valve 2 and the second three-way reversing valve 4 are respectively connected to the main smoke inlet channel 1 and the main smoke outlet channel 5.

[0040] In this embodiment, when the heat exchange mechanism 3 needs maintenance, the first three-way reversing valve 2 and the second three-way reversing valve 4 can be closed, and the three heat exchange mechanisms 3 are connected in parallel, so that maintenance of one heat exchange mechanism 3 will not affect the normal operation of the other two heat exchange mechanisms 3.

[0041] The working principle and use process of the utility model are as follows: first, when the heat exchange mechanism 3 needs maintenance, the first three-way reversing valve 2 and the second three-way reversing valve 4 are closed first, and the three heat exchange mechanisms 3 are connected in parallel, so that the maintenance of one heat exchange mechanism 3 will not affect the normal operation of the other two heat exchange mechanisms 3; then, the shell cover 314 is removed, and the frame assembly 32 is rotated so that the actuator assembly 33 to be replaced is located between the port 312 in the front, and then the fixing bracket 331 and the mounting bracket 322 are removed. The bolts are tightened to remove the actuator 33 from the frame assembly 32, and the actuator 33 is taken out of the shell 311 through the hatch 312, and the tube bundle 332 is pulled out and separated from the fixing frame 331, and the replaced tube bundle 332 is installed between the fixing frames 331, and finally the replaced actuator 33 is installed back into the frame assembly 32 and fixed, and the frame assembly 32 is rotated to drive the tube bundle 332 in the actuator 33 to align with the circular hole 316, and then the shell cover 314 is installed back onto the shell 311.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-channel regenerative heat exchange device, comprising a main flue gas inlet channel (1) and a main flue gas outlet channel (5), characterized in that: Three parallel heat exchange mechanisms (3) are arranged between the main smoke inlet channel (1) and the main smoke outlet channel (5) and are used for heat transfer. The heat exchange mechanisms (3) include: The main body component (31) comprises a shell (311) arranged between the main smoke inlet channel (1) and the main smoke outlet channel (5), a hatch (312) opened at the front end of the shell (311), a partition (315) fixed at both ends inside the shell (311), and a plurality of circular holes (316) opened inside the partition (315); The frame assembly (32) comprises a shaft (321) rotatably mounted between two end partitions (315), a mounting frame (322) with fixed outer walls at both ends of the shaft (321), and a plurality of mounting grooves (323) distributed in a circumference on the mounting frame (322); The actuator assembly (33) includes a fixing frame (331) inserted into the installation groove (323) and a pipe bundle (332) passing through and installed between the fixing frames (331) at both ends.

2. A three-channel heat storage heat exchange device according to claim 1, characterized in that: The frame assembly (32) further comprises a first mounting hole (324) formed on the outer wall of the mounting frame (322), and the execution assembly (33) further comprises a second mounting hole (333) formed on the outer wall of the fixing frame (331) and matched with the first mounting hole (324).

3. A three-channel heat storage heat exchange device according to claim 1, characterized in that: The actuator assembly (33) further comprises gaskets (334) fixed at both ends of the tube bundle (332), and the gaskets (334) at both ends are respectively matched with the circular holes (316) on the partitions (315) at both ends.

4. A three-channel heat storage heat exchange device according to claim 1, characterized in that: The main body component (31) further comprises mounting ears (313) fixed at four corners inside the bay opening (312), and a shell cover (314) is mounted in the bay opening (312) via the mounting ears (313).

5. A three-channel heat storage heat exchange device according to claim 4, characterized in that: A sealing ring is fixed on the outer edge of the inner surface of the shell cover (314), and the sealing ring is matched with the inner wall of the chamber opening (312).

6. A three-channel heat storage heat exchange device according to claim 1, characterized in that: A first three-way reversing valve (2) and a second three-way reversing valve (4) are respectively installed at both ends of the housing (311), and the first three-way reversing valve (2) and the second three-way reversing valve (4) are respectively connected to the main smoke inlet channel (1) and the main smoke outlet channel (5).

Images